42 tools

Calculators & Converters

42 tools in this category — all running 100% in your browser. No uploads, no tracking, no accounts.

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Area Converter

Convert between m², km², ft², acre, hectare, mi² with all-units table. 100% private. 100% private.

Calculators

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Binary Calculator

Add, subtract, multiply, divide binary numbers with step-by-step solution. 100% private. 100% private.

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BMI Calculator

Calculate Body Mass Index (BMI) from height and weight in metric or imperial units. Get category (underweight / normal / overweight / obese), healthy weight range, and 10+ extras. 100% private.

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Calorie Calculator

Calculate daily calorie needs using Mifflin-St Jeor with activity levels. 100% private. 100% private.

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Capital Gains Calculator

Calculate capital gains tax with short/long-term rates and exemptions. 100% private. 100% private.

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Compound Interest Calculator

Calculate compound interest: A = P(1+r/n)^(nt). Multiple compounding frequencies, regular contributions, inflation adjustment, and 10+ extras. 100% private.

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Concentration Calculator

Calculate solution concentration (molarity, molality, normality). 100% private. 100% private.

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Currency Converter

Convert between 30+ major world currencies (USD, EUR, GBP, INR, JPY, CNY, AUD, CAD, and more). Includes a built-in reference-rate table, live-like quick conversion, amount scaling, and bulk table view. Runs 100% offline with a clear note that rates are reference (not live) values. 100% private.

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Data Storage Converter

Convert between bits, bytes, KB, MB, GB, TB, PB, KiB, MiB, GiB, TiB, and 10+ extras. 100% private.

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Data Unit Converter

Convert between bits, bytes, KiB, MiB, GiB, TiB, PiB, KB, MB, GB, TB with all-units table. 100% private. 100% private.

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Dilution Calculator

Calculate dilution using C1V1=C2V2 formula. 100% private. 100% private.

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Discount Calculator

Calculate final price after discount, original price from final + %, stacked discounts, BOGO savings, and tax-inclusive final. With 10+ extras. 100% private.

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Enzyme Activity Calculator

Calculate enzyme activity (U/mL, specific activity). 100% private. 100% private.

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Fibonacci Sequence Generator

Generate Fibonacci numbers with fast-doubling algorithm. Custom start, count, and modulo. 100% private. 100% private.

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Fraction Calculator

Add, subtract, multiply, divide fractions with simplification. 100% private. 100% private.

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Fuel Cost Calculator

Calculate fuel consumption, cost per trip, MPG vs L/100km, and 10+ extras. 100% private.

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GST / VAT Calculator

Add or remove GST/VAT from any amount. Supports India (5/12/18/28%), UK (20%), Australia (10%), EU standard rates, custom rates, and 10+ extras. 100% private.

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Hexadecimal Calculator

Add, subtract, multiply, divide hex numbers with decimal conversion. 100% private. 100% private.

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Length / Distance Unit Converter

Convert between 18+ length units: metric (m, km, cm, mm, µm, nm), imperial (in, ft, yd, mi, nautical mi), astronomical (AU, ly, parsec), typographic (pt, px), and more. With 10+ extras. 100% private.

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Loan / EMI Calculator

Calculate EMI, total interest, and full amortization schedule with optional prepayments and CSV export. 100% private.

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Molarity Calculator

Calculate molarity from moles and volume. 100% private. 100% private.

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Molecular Weight Calculator

Calculate molecular weight from chemical formula. 100% private. 100% private.

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Mortgage Calculator

Full PITI mortgage calculator with PMI drop-off at 78% LTV, extra-payment payoff modeling, and CSV amortization export. 100% private.

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Mortgage Insurance Calculator

Calculate PMI/MIP costs based on LTV, loan type, and term. 100% private. 100% private.

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Odds Calculator

Convert between probability, decimal odds, fractional odds, American odds. 100% private. 100% private.

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Percentage Calculator

Calculate percentages 6 ways: X% of Y, X is what % of Y, % increase/decrease, % of total, tip %, tax %. With copy, history, and CSV export. 100% private.

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Percentage Of Calculator

Calculate X% of Y, what % is X of Y, and % increase/decrease. 100% private. 100% private.

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Probability Calculator

Calculate probability of events: single, compound, conditional, Bayes. 100% private. 100% private.

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Ratio Calculator

Simplify ratios, solve proportions, scale ratios. 100% private. 100% private.

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Salary Income Tax Calculator

Calculate income tax from gross salary with brackets and deductions. 100% private. 100% private.

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Scale Calculator

Calculate scale factor for maps, models, blueprints. 100% private. 100% private.

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Scientific Calculator

Scientific calculator with trig, log, exponential, memory, history, and 10+ extras. 100% private.

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Scientific Notation Converter

Convert between decimal and scientific notation with E-notation and engineering notation. 100% private. 100% private.

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Simple Interest Calculator

Calculate simple interest (SI = P*R*T/100) with 3 solver modes, partial years, and 10+ extras including comparison with compound interest. 100% private.

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SIP Calculator

Calculate the future value of a Systematic Investment Plan (SIP) with optional annual step-up. Shows total invested, returns, and projected corpus. 100% private.

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Speed Converter

Convert between mph, km/h, m/s, fps, knot with all-units table. 100% private. 100% private.

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Stamp Duty Calculator

Calculate stamp duty/transfer tax by jurisdiction with thresholds and rates. 100% private. 100% private.

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Standard Deviation Calculator

Calculate mean, median, mode, std dev, variance, and range from data set. 100% private. 100% private.

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Steps to Miles Converter

Convert steps to miles/km with stride length and calorie burn. 100% private. 100% private.

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Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin, Rankine, and 10+ extras. 100% private.

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Tip Calculator

Calculate tip + total bill with custom %, split between N people, round-up options, and per-person breakdown. Includes tax handling and 10+ extras. 100% private.

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Weight / Mass Converter

Convert between 15+ weight units: kg, lb, oz, ton, gram, carat, stone, and 10+ extras. 100% private.

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