All tools
Browse by page or use search — full list is not dumped on one URL.
- Requests per second
- Margin of error percent scale
- Parallel resistance (two resistors)
- Series resistance total
- Total series resistance
- Resize image online
- Plate food cost percent
- Table turns per service
- Tip pool share per hour
- 401k match amount
- Nest egg from annual spend
- Return on assets ROA
- Return on equity ROE
- Revenue per m² retail
- Reverse text
- Reverse word order in text
- Relative luminance from RGB
- RGB to CMYK (approx)
- RGB to HEX converter
- RGB to HSL converter
- Japanese rice water ratio volume
- Motor torque Nm scale
- Odometry distance m
- Return on investment (ROI)
- ROI from gain and cost
- Roman numerals ↔ Arabic
- Roof pitch calculator
- Snow load force (kN/m² scale)
- Metal roof panels count
- Gutter capacity scale
- Room area calculator
- Nth root calculator
- ROT13 encoder/decoder
- Rotate image 90°
- Rotate PDF pages
- Round to decimal places
- Round numbers (decimal places)
- Rowing 500m split sec
- Rule of 72 doubling time
- Rule of three (proportion)
- Vertical km per hour
- Average revenue per account
- Revenue churn from MRR lost
- Expansion MRR total
- Gross churn percent
- LTV to CAC ratio
- Sales efficiency magic number
- MRR growth percent