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Global / English · 34 tools English

Global. Clearly calculated.

English-language finance and productivity calculators for an international audience – from compound interest to cross-time-zone planning.

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34

tools

7

Categories

2026

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2026 · 34 tools

34 tools

Finance

Compounding, long-term wealth and investment projections that make assumptions visible.

Compound Interest Calculator Project wealth growth with monthly contributions, compounding returns, inflation adjustment and optional tax drag. Finance · 4 min VAT Calculator Calculate VAT from net or gross amounts, with standard, reduced and zero rates and an instant breakdown. Finance · 2 min Percentage Calculator Calculate a percentage of a value, percentage increase or decrease, and the percentage difference between two numbers. Finance · 2 min Profit Margin & Markup Calculator Calculate profit margin, markup and profit from cost and selling price, or find the price needed for a target margin. Finance · 3 min Currency Converter Convert EUR, USD, GBP and TRY with editable reference rates, cross rates and a full four-currency breakdown. Finance · 2 min Loan Payment Calculator Calculate monthly payments, total interest and payoff time for a fixed-rate loan, with extra payments and a schedule. Finance · 4 min CAGR Calculator Calculate compound annual growth rate from starting value, ending value and time period, with total return and multiple. Finance · 3 min

Health & Wellbeing

BMI, body fat, ideal weight, calories, water, pregnancy, baby and sleep calculators.

BMI Calculator Calculate your body mass index from height and weight, see your category, healthy weight range and target weight. Health & Wellbeing · 3 min Ideal Weight Calculator Estimate your ideal weight with the Devine, Robinson, Miller and Hamwi formulas, plus a healthy BMI range. Health & Wellbeing · 3 min Daily Calorie Calculator Calculate basal metabolic rate, total daily energy expenditure and a calorie target with protein, carbs and fat. Health & Wellbeing · 4 min Water Intake Calculator Estimate daily water needs from body weight, exercise and climate, shown in litres, millilitres and glasses. Health & Wellbeing · 2 min Pregnancy Week & Due Date Calculator Calculate pregnancy week, trimester and estimated due date from the first day of your last period and cycle length. Health & Wellbeing · 3 min Sleep Duration & Sleep Cycle Calculator Calculate net sleep duration, sleep cycles and alternative bedtimes from your wake time and time to fall asleep. Health & Wellbeing · 3 min Body Fat Calculator Estimate body fat percentage, fat mass and lean mass from neck, waist and hip measurements using the US Navy method. Health & Wellbeing · 3 min Baby Age Calculator Calculate your baby’s age in months, weeks and days, plus the next monthly milestone. Health & Wellbeing · 2 min

Math & Statistics

Standard deviation, data analysis and everyday maths tools.

Standard Deviation & Statistics Calculator Calculate standard deviation, variance, mean, median, minimum and maximum from a data set. Math & Statistics · 3 min

Time & Everyday

Age, date differences and text tools for everyday planning.

Age Calculator Calculate your exact age from your date of birth in years, months, days, weeks and hours, plus days to your next birthday. Time & Everyday · 2 min Date Difference Calculator Calculate the days, weeks, months and business days between two dates, with an option to include the end date. Time & Everyday · 2 min Word and Character Counter Count words, characters, sentences and paragraphs in your text, with estimated reading and speaking time. Time & Everyday · 2 min Week Number Calculator Find the ISO week number for any date, with week start/end, day of year and days remaining. Time & Everyday · 2 min Time Duration Calculator Calculate the duration between two times with break deduction, in hours/minutes and decimal hours. Time & Everyday · 2 min

Converters & Units

Temperature, length, weight, volume, speed and data converters.

Temperature Converter Convert Celsius, Fahrenheit and Kelvin instantly. Converters & Units · 2 min Length Converter Convert meters, centimeters, kilometers, inches, feet, yards and miles. Converters & Units · 2 min Weight Converter Convert kilograms, grams, tonnes, ounces, pounds and stone. Converters & Units · 2 min Volume Converter Convert liters, milliliters, cubic meters, cups, fluid ounces and gallons. Converters & Units · 2 min Speed Converter Convert km/h, m/s, mph and knots instantly. Converters & Units · 2 min Data Converter Convert bytes, KB, MB, GB, TB, KiB, MiB and GiB. Converters & Units · 2 min

Utilities

IBAN validation, colour conversion and date add/subtract tools.

IBAN Validator Validate an IBAN for length, structure and the mod-97 checksum in your browser. Utilities · 2 min HEX, RGB & HSL Converter Convert HEX to RGB and HSL, with luminance and contrast values. Utilities · 2 min Add or Subtract Days Add or subtract days, weeks, months or years from any date. Utilities · 2 min

Productivity

Time zones, business days and planning utilities for distributed teams.

Time Zone Converter & Business Days Convert a meeting time across major time zones and count business days between two dates, excluding weekends. Productivity · 3 min Volumetric Weight & Chargeable Weight Calculate volumetric weight and chargeable weight from package dimensions, actual weight and carrier divisor. Productivity · 2 min Tip Calculator & Bill Splitter Calculate tip, total and cost per person, with optional rounding and flexible tip percentages. Productivity · 2 min Unit Converter Convert length, weight, temperature, area, volume, speed and data units instantly in your browser. Productivity · 2 min
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Assumptions you can actually see

The global hub focuses on questions that do not stop at a border: how money compounds, what inflation does to purchasing power and how to plan across time zones. Each tool shows its formula, its assumptions and a live result.

The English collection is intentionally small and deep rather than broad. More global calculators are added as they meet the same standard for clarity, speed and privacy.

Lightning fast

Served statically, interactive only where needed.

Runs in your browser

Your inputs stay in your browser. No transfer, no account.

Transparent formulas

Every calculation is documented openly – no black box.

2026 data

Central constants, reviewed every year.

Frequently asked questions

Frequently asked questions

Are the global tools free?

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Yes. Every calculator is free, requires no account and runs entirely in your browser.

Can I use the results for financial planning?

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They are educational projections, not financial advice. Returns are assumptions, not guarantees; tax treatment varies by country and account type.

Will more English calculators be added?

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Yes. The English hub expands as we add tools that meet the same bar for accuracy, transparency and speed.

Regions

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Deutschland

60 tools · Deutsch

Türkiye

63 tools · Türkçe