2026-09-15 8 min

Potassium Intake Calculator

Free potassium intake calculator that totals potassium from foods and supplements, compares it against the sex-specific adequate intake (3,400 mg men, 2,600 mg women), and returns coverage, a 0–100 intake score, and produce-first recommendations.

Calculator

Gender

Age

yrs

Full years

Food potassium

Potatoes, beans, bananas, greens, yogurt, juice

Supplement potassium

All pills, powders, drops combined

Results update live as you type

Status:2500 mg total73.5% of AIBelow target — 81/100

Results

Total daily intake2500 mg

% of daily target73.5%

Intake score81/100

Daily target (AI)3400 mg

Illustrative ceiling (2× target)36.8% of limit

Gap to target900 mg short

Food plus supplements vs AI target

Intake Breakdown

Component	Amount	% of target
Food intake	2500 mg	73.5%
Supplements	0 mg	0%
Total intake	2500 mg	73.5%
Daily target (AI)	3400 mg	100%
Gap to target	900 mg	26.5%
Illustrative ceiling (2× target)	6800 mg	36.8%

Recommendations

▸Add about 900 mg daily from potatoes, beans, bananas, and leafy greens to close the gap to target
▸Add one potato or bean-based meal daily — each delivers 600–900 mg fast.
▸Spread potassium across meals and keep sodium moderate so the ratio works for you.
▸Re-run after 2–4 weeks of consistent eating or any supplement change

Results

Normal

Total daily intake

2500 mg

Food plus supplements vs AI target

% of daily target

73.5%

Share of the 3400 mg AI

Intake score

81/100

Proximity to target with upper-limit penalty

Daily target (AI)

3400 mg

3,400 mg men / 2,600 mg women adequate intake

Illustrative ceiling (2× target)

36.8% of limit

No upper limit is set for potassium — the bar shows twice the target as a commonsense reference.

Gap to target

900 mg short

What remains to reach the daily target

Age- and sex-specific DRI targets with an upper-limit safety check. Self-reported intake runs 10–20% error — average 3–7 days for a stable reading.

Visualizations

Intake vs target (mg)

3,400Target

2,500Total

6,800Illustrative ceiling (2× target)

Where intake comes from

Food74%

Supplements0%

Gap to target26%

Coverage of daily target

73.5%

0200

Formula

Potassium coverage prices total milligrams against the sex-specific adequate intake, rewarding produce-driven totals.

Coverage = total intake / AI target x 100

Alternative Form

Total = food + supplements; Gap = target − total

Variables

Symbol	Name	Unit	Description
Total	Total intake	mg/day	Food plus supplement potassium per day
Target	Daily target	mg/day	AI value for the selected age and sex
Coverage	Coverage	%	Total as a share of target
Gap	Gap to target	mg	Shortfall remaining when coverage is under 100%
Limit	Upper boundary	mg/day	No upper limit is set for potassium — the bar shows twice the target as a commonsense reference.
Score	Intake score	0-100	Proximity to target with an over-limit penalty

Explanation

Coverage rewards landing near 100% of target; the score falls as intake drifts low or high, and collapses when the upper limit is breached.

Derivation

Target from DRI tables by age and sex. Coverage = total / target x 100. Score = 100 − |coverage − 100| x 0.7, capped at 35 above the upper limit, floored at 5.

Step-by-Step Calculation

Follow each step to understand how the result is calculated from your inputs.

Step 1

Add food and supplement sources into one daily total.

Total = food + supplements

Food:2500 mg

Supplements:0 mg

Intermediate: Same-unit daily sum

Result: Total 2500 mg

Step 2

Look up the AI daily target for the selected age and sex.

AI by age and sex

Target:3400 mg

Intermediate: 3,400 mg men / 2,600 mg women adequate intake

Result: Target 3400 mg

Step 3

Express intake as a share of target.

Coverage = total / target x 100

Coverage:73.5%

Intermediate: 2500 / 3400 x 100

Result: 73.5% of daily target

Step 4

Measure the remaining gap, if any.

Gap = target − total

Gap:900 mg short

Intermediate: 3400 − 2500

Result: Add 900 mg from food first

Step 5

Check the total against the upper safety boundary.

Upper-limit share = total / limit x 100

Boundary:6800 mg

Share:36.8%

Intermediate: No upper limit is set for potassium — the bar shows twice the target as a commonsense reference.

Result: Inside the safe boundary

Step 6

Convert coverage and safety into one score and act on it.

Score = 100 − |coverage − 100| x 0.7 (capped at 35 over limit)

Score:81/100

Status:Below target

Intermediate: Add about 900 mg daily from potatoes, beans, bananas, and leafy greens to close the gap to target

Result: Add about 900 mg daily from potatoes, beans, bananas, and leafy greens to close the gap to target

Final Answer

2500 mg

Worked Examples

See how the calculator works with different scenarios.

Scenario

A 30-year-old man getting 1350 mg of potassium from food and none from supplements.

Inputs

Food:1350 mg

Supplements:0 mg

Calculation

Total = 1350 mg. Coverage = 1350 / 3400 x 100 = 45%.

Result

~45%% of target — Low status

Interpretation

Classic gap: grains and meat crowd out the produce that carries potassium.

Understanding Your Result

Your Result: Total daily intake: 2500 mg

Typical range: AI 3,400 mg men / 2,600 mg women; average US intake near 2,500 mg; healthy band roughly 80–120% of AI.

What This Means

Compare daily potassium against the 3,400/2,600 mg adequate intake, with a 0–100 intake score. Coverage of the daily target, a safety check, and a 0–100 intake score.

Why It Matters

Potassium is the lever most eaters miss — raising it lowers pressure about as reliably as cutting salt.

Professional Interpretation

Counsel like a dietitian: almost every low score here is fixed with potatoes, beans, and greens — not powder.

Why men and women differ

Targets scale with typical body size and intake — the calculator picks the right one by sex.

Total beats any single source

The body counts food plus supplements together — log both before judging coverage.

Recommendations

•Eat one potassium heavyweight daily: potato, beans, or spinach
•Keep the sodium-to-potassium ratio under 1 by salting less
•Prefer food sources before raising supplement doses
•Re-check after 2–4 weeks of consistent intake
•Pair this check with the Daily Micronutrient Calculator for the full picture

Educational Content

Introduction

Concept Explanation

Total daily potassium from foods plus supplements, priced against the sex-specific adequate intake.

Applications

▸Auditing produce-driven potassium coverage

▸Checking whether supplements are still needed

▸Comparing food-first vs supplement strategies

▸Adjusting intake for age and sex differences

▸Spotting excess before it becomes a habit

▸Planning meals around the richest food sources

Benefits

•One headline coverage number with a 0–100 score
•Food vs supplement split at a glance
•Upper-limit safety check built in
•Age- and sex-specific targets automatically
•Concrete food fixes for any gap

Limitations

•Self-reported intake averages 10–20% error
•Absorption varies with gut health and pairings
•Single-day snapshot; needs shift with diet phases
•Clinical deficiency needs lab tests, not estimates

Best Practices

•Log 3–7 typical days, not one perfect day
•Cook potatoes and greens in their skins to keep minerals
•Count fortified foods under food, not supplements
•Re-run when diet, age band, or supplements change
•Confirm persistent lows or highs with a clinician

Common Misconceptions

Myth: Bananas alone fix low potassium.

Truth: One banana gives ~420 mg — potatoes, beans, and greens deliver double per serving.

Myth: If some is good, more is always better.

Truth: Coverage plateaus at 100% — beyond the target only the upper limit matters.

Myth: Supplements beat food for every nutrient.

Truth: Foods bundle fiber, co-factors, and slower release that pills rarely match.

Practical Tips

•Build one bean-or-potato meal into every day
•Photograph meals for 3 days to calibrate portions
•Read supplement labels for elemental amounts, not compound weight
•Spread doses that absorb better in smaller amounts
•Recheck this calculator monthly while adjusting
•Keep one steady breakfast to anchor daily intake

Common Mistakes

Counting one perfect day as typical

Average 3–7 ordinary days including weekends and eating out.

Logging compound weight instead of elemental dose

Use the elemental potassium line on the Supplement Facts panel.

Forgetting fortified foods and drinks

Count fortified cereals, milks, and energy drinks under food intake.

Stacking overlapping supplements

Add every pill, powder, and gummy into one supplement total before judging.

Chasing 100% every single day

Weekly averages decide status — land in the 90–120% band most days.

Assumptions

This calculator makes the following assumptions to provide estimates:

DRI targets: AI values from the Institute of Medicine DRI tables for adults.

Additive sources: Food and supplement amounts add directly into one daily total.

Steady state: Inputs represent a typical day, not a single unusual spike.

Adult ranges: Targets assume non-pregnant, non-lactating adults unless noted.

Limitations

Be aware of these limitations when using this calculator:

Estimate, not diagnosis: Coverage math cannot diagnose deficiency or toxicity.

Absorption ignored: Pairings, gut health, and medication effects are not modeled.

Label error: Food database and label values vary 10–20% from actual content.

Not medical advice: Pregnancy, kidney disease, and medications need clinician guidance.

Frequently Asked Questions

Answers to common questions about this calculator.

What does potassium intake do in the body?

Balances fluids, steadies blood pressure, and keeps muscles and the heart firing normally as sodium’s cellular counterweight. It works as sodium’s counterweight inside cells — the ratio matters as much as either number.

How much potassium do I need per day?

The adequate intake (AI) is 3400 mg for men and 2600 mg for women. Produce-heavy diets usually clear it; low-produce diets rarely do.

What are signs of low potassium?

Low potassium brings cramps, weakness, and constipation — diuretics and heavy sweating are the usual causes.

Is there an upper limit for potassium?

No upper limit is set because chronic excess is mainly a risk with kidney disease or potassium-sparing drugs, where it can disturb heart rhythm Still, more than the target buys nothing extra.

Which foods are richest in potassium?

Best bets: potatoes, bananas, beans, spinach, yogurt, orange juice, and dried apricots.

Do I need a potassium supplement?

Food first: over-the-counter pills are capped near 99 mg and barely move the needle. Prescription potassium needs medical supervision.

How do I absorb potassium better?

Spread potassium across meals and keep sodium moderate so the ratio works for you.

Who runs low on potassium most often?

People on thiazide or loop diuretics, heavy sweaters, and low-produce eaters run low most often.

What is the difference between RDA and AI?

RDA is set when evidence pins the requirement precisely; AI is the best estimate when data are thinner. Both work as daily targets in this calculator.

What does the upper limit (UL) mean?

The highest daily intake likely safe for almost all adults. Crossing it does not guarantee harm, but risk rises — especially from supplements.

Should I count food and supplements together?

Yes. The body totals every source, so add fortified foods under food and every pill, powder, and gummy under supplements.

How accurate are intake estimates?

Within about 10–20% when portions are honest. Average 3–7 typical days rather than trusting one perfect day.

Do needs change with age or sex?

Often. Iron, calcium, and several vitamins carry different targets by sex or life stage — this calculator switches them automatically.

Can lab tests replace tracking?

Labs confirm status for nutrients like iron, B12, and vitamin D. Tracking shows habits; labs show stores — use both when numbers stay low.

Are food sources really better than pills?

Usually. Foods bundle fiber, co-factors, and slower release, while pills help only where diet or absorption falls short.

When should I re-check my intake?

After 2–4 weeks of consistent eating, any supplement change, or a new life stage such as pregnancy or older age.

Related Calculators

Explore more calculators related to this topic.

Related Guides

Deepen your understanding with these educational resources.

Eating for Micronutrient Coverage

Food-first strategies for the full vitamin and mineral panel.

Supplements: What Labels Hide

Elemental doses, stacking risks, and timing basics.

Building a Balanced Plate

Produce, protein, and whole grains in the right shares.

Glossary

Technical terms used in mortgage calculations explained in plain language.

AI: Adequate Intake: 3,400 mg potassium daily for men, 2,600 mg for women.
Upper Limit (UL): Upper Limit: none established — very high intakes need clinician review with kidney disease or interacting drugs.
% Daily Value: Label shorthand: share of a 2,000-calorie reference diet — useful but less precise than age- and sex-specific targets.
Sodium-potassium ratio: A ratio under 1 (more potassium than sodium) tracks with healthier blood pressure.
Elemental amount: The actual potassium inside a compound — the number this calculator wants.
Bioavailability: Share of an ingested nutrient the body can actually absorb and use.
Fortified food: Food with nutrients added during processing, such as iodized salt or fortified milk.
Deficiency vs insufficiency: Deficiency means clinical signs; insufficiency means low stores without symptoms yet.

Authoritative References

Trusted sources and standards referenced by this calculator.

NIH ODS — Potassium fact sheet U.S. Dietary Guidelines for Americans NIH Office of Dietary Supplements WHO — Healthy diet fact sheet FDA — Daily Value on nutrition labels Academy of Nutrition and Dietetics

Applicable Standards

Institute of Medicine Dietary Reference Intakes (DRI)NIH Office of Dietary Supplements fact sheetsU.S. Dietary Guidelines for Americans

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Page Information

Last Updated:

2026-09-15

Version:

2.0.0

References:

License:

Free to use for educational and professional purposes.