Numbers are everywhere. But you don’t have to let them slow you down.

We’ve built a modern, mobile-friendly library of calculators that works: fast and always available.

Our tools are organized into clear categories, so you can find what you need in seconds:

➕ Basic & Complex Math

Basic arithmetic, percentages, areas and volumes. Statistics calculators, similarity calculuators, Fibonacci numbers, Mean, Variance, Standard Deviation, Kurtosis, Skewness to Combinatorics calculators.

➕ Financial & Business

Simple interest, compound interest, Trial Balance, Balance Sheet and its companion, the Common Size Balance sheet. M-PESA charges to VAT calculators.

➕ Science & Engineering

Scientific calculator like Power Consumption - Heating Time, Synchrronous motor speed and unit converters.

➕ Health & Fitness

BMI, BMR, body fat percentage, RDEE to the Ebbinghaus Forgetting Curve calculators.

➕ String Manipulators

SpongeBob Text Generators, uppercase/lowercase converters, Base64 encoders, Rot13 string converters to number-to-string converters.

➕ Date & Time

Past and future date calculators.

➕ Passwords & Entropy

Password strength, time-to-crack calculators and password generators.

Cosine Similarity (Vector Method).

348 calculations

Password - Time To Crack.

151 calculations

Past/Future Date.

129 calculations

Password Strength.

123 calculations

Cosine Similarity (Bag of Words).

122 calculations

Fibonacci Number.

120 calculations

Resting Daily Energy Expenditure (RDEE).

119 calculations

Body Fat Percentage.

117 calculations

BMI.

115 calculations

PAYE (2023).

114 calculations

PAYE (2021).

114 calculations

PAYE (2020).

114 calculations

VAT (Kenya).

113 calculations

Ebbinghaus Forgetting Curve.

113 calculations

Meters Converter.

112 calculations

PAYE (2019).

111 calculations

PAYE (2022).

111 calculations

Basal Metabolic Rate (BMR).

110 calculations

Jaccard Index, Jaccard Distance, Jaccard Similarity, Dice Coefficient.

110 calculations

Compound Interest.

109 calculations

A visitor has used Feet Converter.

#calculator
07 Sep, 9:34 AM
07 Sep, 9:34 AM
09 34 07 Sep

A visitor has used PAYE (2021).

#calculator
07 Sep, 8:52 AM
07 Sep, 8:52 AM
08 52 07 Sep

A visitor has used Basal Metabolic Rate (BMR).

#calculator
07 Sep, 8:01 AM
07 Sep, 8:01 AM
08 01 07 Sep

A visitor has used Tanimoto Coefficient Similarity.

#calculator
07 Sep, 6:36 AM
07 Sep, 6:36 AM
06 36 07 Sep

A visitor has used M-PESA Charges (2023).

#calculator
07 Sep, 6:33 AM
07 Sep, 6:33 AM
06 33 07 Sep

A visitor has used Tanimoto Coefficient Similarity.

#calculator
07 Sep, 6:30 AM
07 Sep, 6:30 AM
06 30 07 Sep

A visitor has used M-PESA Charges (2023).

#calculator
07 Sep, 6:30 AM
07 Sep, 6:30 AM
06 30 07 Sep

A visitor has used Tanimoto Coefficient Similarity.

#calculator
07 Sep, 6:29 AM
07 Sep, 6:29 AM
06 29 07 Sep

A visitor has used M-PESA Charges (2023).

#calculator
07 Sep, 6:28 AM
07 Sep, 6:28 AM
06 28 07 Sep

A visitor has used M-PESA Charges (2023).

#calculator
07 Sep, 6:27 AM
07 Sep, 6:27 AM
06 27 07 Sep

A visitor has used Megabytes Converter.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Pixels Converter.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Gigabytes Converter.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Random String Generator.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Readability (Flesch-Kincaid, Gunning Fog, Coleman Liau, SMOG Index).

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Rot13.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Base64 Encode.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Tanimoto Coefficient Similarity.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Mean, Variance, Standard Deviation, Kurtosis, Skewness.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Cosine Similarity (Bag of Words).

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Cosine Similarity (Vector Method).

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Simhash Similarity.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Jaccard Index, Jaccard Distance, Jaccard Similarity, Dice Coefficient.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Binomial Distribution, Mean, Standard Deviation, Variance, Skewness, Kurtosis.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Resting Daily Energy Expenditure (RDEE).

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Ebbinghaus Forgetting Curve.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Basal Metabolic Rate (BMR).

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Body Fat Percentage.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used BMI.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

A visitor has used Power Consumption - Heating Time.

#calculator
07 Sep, 5:54 AM
07 Sep, 5:54 AM
05 54 07 Sep

  United States

2169 calculations

  Japan

951 calculations

  Canada

455 calculations

Anonymous Location

441 calculations

  China

360 calculations

  United Kingdom

277 calculations

  France

116 calculations

  Germany

107 calculations

  Brazil

94 calculations

  Bulgaria

76 calculations

  Europe

62 calculations

  India

50 calculations

  Kenya

48 calculations

  Romania

48 calculations

  Ukraine

44 calculations

  Mexico

38 calculations

  Vietnam

38 calculations

  Argentina

36 calculations

  Turkey

33 calculations

  Russian Federation

29 calculations