PRODUCTIVITY & DEVELOPER UTILITIES
Technology & Productivity Tools
Speed up daily workflows with instant browser utilities for text formatting, time conversion, data transfer estimation, and statistical calculations.
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Absolute Value Calculator
Calculate the absolute value of a number.
Age on Date Calculator
Calculate a person
Annual Work Hours Calculator
Calculate annual work hours from weekly hours and working weeks.
API Error Rate Calculator
Calculate API error rate from failed and total requests.
Average Calculator
Calculate the arithmetic mean of a set of numbers.
Bandwidth Utilization Calculator
Calculate bandwidth utilization percentage.
Base64 Encoder & Decoder
Encode or decode Base64 text locally in your browser.
Budget Variance Calculator
Compare actual spending or revenue with a budget.
Business Days Calculator
Calculate weekdays between two dates.
Character Counter
Count characters with or without spaces.
Coefficient of Variation Calculator
Calculate coefficient of variation as a percentage.
Combination Calculator
Calculate the number of combinations where order does not matter.
Conditional Probability Calculator
Calculate conditional probability from a joint event and conditioning event.
Credit Weighted Average Calculator
Calculate an academic average when courses have different credit units.
Cube Root Calculator
Calculate the real cube root of a number.
Current Ratio Calculator
Calculate the current ratio to compare current assets with current liabilities.
Date Add / Subtract Calculator
Move a starting date forward or backward by a selected number of days, weeks or calendar months.
Date Difference Calculator
Calculate the difference between two calendar dates.
Days Until Date Calculator
Calculate the number of calendar days between today and a target date.
Deadline Progress Calculator
Calculate progress through a project based on elapsed and total days.
Debt Service Coverage Ratio Calculator
Estimate how comfortably operating cash flow covers debt service.
Debt-to-Income Ratio Calculator
Calculate your debt-to-income ratio from monthly debt payments and gross monthly income.
Expense Variance Calculator
Measure the difference between planned and actual expenses.
Factorial Calculator
Calculate the factorial of a non-negative integer.
Farm Input Cost Ratio Calculator
Calculate farm input costs as a percentage of total production cost.
Hours to Decimal Calculator
Convert hours and minutes into decimal hours.
Hours to Minutes Calculator
Convert hours and minutes into total minutes.
HTML Entity Encoder
Encode or decode common HTML entities.
Image Aspect Ratio Calculator
Calculate image aspect ratio from width and height.
Ingredient Substitution Ratio Calculator
Scale a replacement ingredient quantity using a substitution ratio.
Interest Coverage Ratio Calculator
Measure how many times operating profit covers interest expense.
Interquartile Range Calculator
Calculate the interquartile range from a data set.
JSON Formatter
Format and validate JSON in your browser.
Line Counter
Count lines and non-empty lines in text.
Loan Repayment Calculator
Estimate monthly loan payments from principal, annual interest and term.
Logarithm Calculator
Calculate a logarithm for a chosen base.
Median Calculator
Find the middle value in an ordered data set.
Meeting Cost Calculator
Estimate the labour cost of a meeting from attendee count, average hourly cost and duration.
Mode Calculator
Find the most frequently occurring value in a data set.
Nigerian PAYE Tax Calculator (2026 Bands)
Calculate Nigerian Personal Income Tax (PAYE) with 2026 progressive tax bands, pension deduction, and rent relief caps. Fast, private client-side calculator.
Odds Probability Calculator
Convert between probability and odds.
Operating Expense Ratio Calculator
Measure operating expenses as a percentage of revenue.
Password Generator
Generate a random browser-side password with adjustable length and a mixed character set.
Permutation Calculator
Calculate the number of ordered arrangements.
Pomodoro Session Calculator
Plan focused study or work time from session length, breaks and number of cycles.
Probability Complement Calculator
Calculate the probability that an event does not occur.
Profit Margin Calculator
Calculate profit and profit margin from revenue and total costs.
Proportion Calculator
Solve a missing value in a proportion.
Quartile Calculator
Calculate Q1, median and Q3 for a data set.
Quick Ratio Calculator
Calculate the quick ratio using liquid current assets and current liabilities.
Range Calculator
Calculate the range of a data set.
Ratio Calculator
Simplify a ratio and show its decimal relationship.
Regex Tester
Test a regular expression against sample text in your browser.
Remove Duplicate Lines
Remove repeated lines from text in your browser.
Savings Goal Deadline Calculator
Estimate when a savings goal can be reached.
Shipment Weight Average Calculator
Calculate average shipment weight.
Solar Panel Sizing Calculator
Estimate total solar PV panel wattage needed from daily energy load (kWh) and local peak sun hours. Transparent calculation formula and sizing guidance.
Square Root Calculator
Calculate the square root of a non-negative number.
Standard Deviation Calculator
Measure how spread out a data set is.
Text Case Converter
Convert text to uppercase, lowercase or title case in your browser.
Time Duration Calculator
Calculate the duration between two times.
Time Zone Offset Calculator
Convert a time using a simple UTC offset.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and vice versa.
URL Encode Decode Tool
Encode or decode URL components safely in your browser.
URL Slug Generator
Create a simple URL-friendly slug from a title.
Variance Calculator
Calculate the variance of a data set.
Weighted Average Calculator
Calculate a weighted average from values and weights.
Weighted Cost Average Calculator
Calculate average unit cost across two purchase batches.
Whitespace Cleaner
Clean repeated spaces, tabs and blank lines from text.
Word Counter
Count words, characters and lines in text directly in your browser.
Work Hours Per Month Calculator
Estimate monthly work hours from weekly hours and weeks per month.
Z Score Calculator
Calculate how many standard deviations a value is from the mean.