SoupCalc

Free calculators with methods you can inspect

SoupCalc brings practical calculators together for fitness, measurements, efficiency, everyday tasks, and personal finance. Start with a reviewed tool below or search the wider catalog when you already know what you need.

The reviewed pages pair a working calculator with explanations of the inputs, method or formula, a complete example, result interpretation, limitations, and relevant sources.

SoupCalc is a free calculator and reference site maintained by an independent individual operator.

Find a calculator

Reviewed calculators

These 40 calculators have completed our current content, functionality, localization, and publishing checks.

Fitness (10)

Running Pace CalculatorBMI CalculatorBMR Basal Metabolic Rate CalculatorVO2 Max Runners CalculatorMenstrual Cycle CalculatorSafe Period CalculatorRM CalculatorSerum Sodium Deficit EstimateSleep Debt CalculatorMCHC Calculator

Metric (7)

Temperature ConverterPressure ConverterEnergy ConverterPower ConverterBattery Capacity Calculator (Ampere-Hours)Centrifugal Force CalculatorTorque to Force Calculator

Efficiency (3)

Base64 Encode/DecodeRandom Password GeneratorTimer

Tools (18)

Free Public NTP ServersRaid Disk CalculatorMbps to MB/s Conversion CalculatorML to Grams CalculatorAir Velocity CalculatorLens Thickness CalculatorSequence Number GeneratorSun Altitude CalculatorDecibel CalculatorBasic CalculatorCooling Water Circulation Utilization Rate CalculatorDepth of Field CalculatorWater Viscosity CalculatorYear-over-Year Decline CalculatorPipe Bend Weight CalculatorDrain Capacity CalculatorAPACHE II CalculatorEggs Boiling Calculator

Finance (2)

Customs Duty CalculatorCapital Expenditure (CapEx) Calculator

How to use SoupCalc

  1. Choose the right tool

    Read the purpose and input descriptions before entering your values, and confirm that the units and assumptions fit your situation.

  2. Check the worked example

    Compare your calculation with the page example to understand how the method turns the supplied inputs into a result.

  3. Interpret the result carefully

    Use the explanation, limits, and cited sources to decide what the result can support and when further advice is appropriate.

How reviewed pages are prepared

We test the calculator against documented examples, review the explanation for internal consistency, identify the formula or method used, and link relevant first-party or authoritative sources. Localized versions are checked for missing sections, untranslated fallback text, altered numbers, and unsafe factual drift before they become eligible for indexing.

What these results cannot decide

Calculator results are estimates shaped by the values and assumptions you provide. Health pages do not diagnose, treat, or replace care from a qualified health professional, and financial pages do not provide individualized financial, tax, legal, or investment advice. Verify important decisions with suitable professional guidance and current primary sources.

About this site and its standards

Learn who maintains SoupCalc, how pages are written and updated, how sources and review roles are described, which limitations apply, and how to contact the operator.

Homepage reviewed: 2026-08-11