All Tools (A–Z)
Every Zerdly tool in one place — 366 calculators, converters and file tools, listed alphabetically.
- 2 km Row Time Predictor
- AER (Azimuth/Elevation/Range) to ECEF Converter
- Age Calculator
- Air Conditioner BTU Calculator
- Amps to Watts Calculator
- ANFO Loading Density Calculator
- Angle Converter
- Angular Misclose Calculator
- Annulus Area Calculator
- APY Calculator
- Aquabike Calculator
- Aquathlon Calculator
- Arc Length Calculator
- Area Converter
- Arithmetic Sequence Calculator
- Aspect Ratio Calculator
- Average (Mean) Calculator
- Azimuth to Bearing Converter
- Baking Pan Conversion Calculator
- Bandwidth Calculator
- Barcode Generator
- Base64 Encoder / Decoder
- Battery Life Calculator
- BCM LCM Tonnes Converter
- Bearing & Distance to Coordinates Calculator
- Bench Height Checker
- Blast Area Calculator
- Blast Hole Count Checker
- Blast Pattern Area Calculator
- Blast Perimeter Calculator
- Blast Timing Delay Calculator
- Blast Volume Calculator
- Blood Alcohol Range Calculator
- BMI Calculator
- BMI Prime Calculator
- BMR Calculator
- Body Fat Percentage Range Calculator
- Body Surface Area Calculator
- Bra Size Calculator
- Break-Even Calculator
- Brick Wall Calculator
- Brick Workout Calculator
- British National Grid (OSGB36) Converter
- Business Days Calculator
- Calorie Deficit Calculator
- Calories to Kilojoules Converter
- Capacitor Energy Calculator
- Care Percentage Calculator
- Carpet Calculator
- Case Converter
- Child Support Estimator (Australia)
- Circle Area Calculator
- Circle from Diameter Calculator
- Circumference Calculator
- Clothing Size Finder
- Colour Contrast Checker
- Colour Palette Generator
- Combinations Calculator
- Combined Scale Factor Helper
- Compound Interest Calculator
- Conception Date Calculator
- Concrete Bags Calculator
- Concrete Slab Volume Calculator
- Cone Surface Area Calculator
- Cone Volume Calculator
- Coordinate Difference Calculator
- Coordinate Offset Calculator
- Coordinate Precision Estimator (Decimal Places to Metres)
- Coordinates to Bearing & Distance Calculator
- Cost Per Unit Calculator
- Countdown Calculator
- Credit Card Payoff Calculator
- Critical Swim Speed Calculator
- Cron Expression Parser
- CSV to JSON Converter
- Cube Surface Area Calculator
- Cube Volume Calculator
- Cups to Grams Converter
- Custom Multisport Calculator
- Cycling Time Calculator
- Cylinder Surface Area Calculator
- Cylinder Volume Calculator
- Daily Water Intake Calculator
- Data Cap Calculator
- Data Storage Converter
- Data Usage Calculator
- Date Add/Subtract Calculator
- Datum Shift Magnitude Calculator
- Days Between Dates Calculator
- DDM to Decimal Degrees Converter
- DDM to DMS Converter
- Decimal Degrees to DDM Converter
- Decking Calculator
- Decking Ratio Calculator
- Delete PDF Pages Tool
- Designed vs Drilled Metres Calculator
- Dipping Hole Toe Calculator
- Discount Calculator
- Distance Between Points Calculator
- DMS to DDM Converter
- DMS to Decimal Degrees Converter
- Download Time Calculator
- Dress Size Calculator
- Drill Consumables Calculator
- Drill Cost per Metre Calculator
- Drill Metres per Shift Calculator
- Drill Utilisation Calculator
- Drone Battery Count Calculator
- Drone Flight Line Spacing Calculator
- Drone GSD Calculator
- Drone Image Count Calculator
- Duathlon Calculator
- Easting/Northing Distance Calculator
- ECEF X/Y/Z to Lat/Long/Height Converter
- Ellipse Area Calculator
- Ellipsoidal to Orthometric Height Converter
- Emergency Fund Calculator
- Energy Converter
- Energy Cost Calculator
- ENU (East/North/Up) to ECEF Converter
- Equilateral Triangle Area Calculator
- EV Charging Cost Calculator
- Excavation Calculator
- Exponent (Power) Calculator
- Factorial Calculator
- Fence Calculator
- Fibonacci Calculator
- Final Grade Calculator
- Flight Altitude from GSD Calculator
- Flooring Calculator
- Force Converter
- Fraction Calculator
- Fragmentation P80 Estimator (Kuz-Ram)
- FTP Training Zone Calculator
- Fuel Cost Calculator
- Fuel Economy Converter
- Future Value Calculator
- GCD & LCM Calculator
- Geocentric vs Geodetic Latitude Converter
- Geohash Encoder / Decoder
- Geometric Sequence Calculator
- GPA Calculator
- Grade & Fall Calculator
- Grams to Cups Converter
- Gravel Calculator
- Great-Circle vs Rhumb Line Distance Comparison
- Grid Convergence Angle Calculator
- Gross Profit Calculator
- Ground Control Density Calculator
- GST Add Remove Calculator
- Hash Generator
- Haversine Great-Circle Distance Calculator
- HEX RGB HSL Colour Converter
- Hiking Time Calculator
- Hole Angle Deviation Calculator
- Horizontal Distance from Slope Distance Calculator
- Hourly to Salary Calculator
- HTML Encoder / Decoder
- HTML to Markdown Converter
- Ideal Body Weight Calculator
- Image Compressor
- Image Converter
- Image DPI / Print Size Calculator
- Image Footprint Calculator
- Image Resizer
- Images to PDF Tool
- Inductive Reactance Calculator
- IP Range Calculator
- Irish Grid / ITM Converter
- Jeans Size Calculator
- JSON Formatter & Minifier
- JWT Decoder
- Karvonen Heart Rate Calculator
- KDP Interior Randomizer
- KDP Spine Width Calculator
- Kids Clothing Size Calculator
- Lat/Long to UTM Converter (WGS84)
- Lat/Long/Height to ECEF Converter
- Latitude and Longitude Converter
- Latitude/Longitude Validator (Range & Format)
- LED Resistor Calculator
- Length Converter
- Line Sorter & Deduplicator
- Loan Repayment Calculator
- Local PDF Merge Tool
- Logarithm Calculator
- LVR Calculator
- Macro Calculator
- Maidenhead Grid Locator Converter
- Marathon Split Calculator
- Markdown to HTML Converter
- Markup Calculator
- Max Heart Rate Calculator
- Mbps to MB/s Calculator
- Median Calculator
- MGA2020 / GDA2020 Converter (Australia)
- MGA94 to MGA2020 Coordinate Converter
- Mode Calculator
- Modulo Calculator
- Mortgage Extra Payment Calculator
- Mortgage Repayment Calculator
- Mulch Calculator
- Negative Split Planner
- Net Pay Calculator
- Net Worth Calculator
- Network Latency Calculator
- Nights in Care Calculator
- Normal Distribution Calculator
- Nth Root Calculator
- Ohms Law Calculator
- One-Rep Max Calculator
- Open Water Swim Time Calculator
- Ovulation Calculator
- Paddling Time Calculator
- Paint Quantity Calculator
- Parallel Resistance Calculator
- Parallelogram Area Calculator
- Parenting Nights Per Year Calculator
- Password Entropy Calculator
- Paver Calculator
- Payback Period Calculator
- PDF Metadata Remover
- PDF Page Counter & Size Checker
- PDF Rearrange Pages Tool
- PDF Rotate Tool
- PDF Split Tool
- Percentage Calculator
- Percentage Change Calculator
- Percentage Decrease Calculator
- Percentage Difference Calculator
- Percentage Increase Calculator
- Percentile Calculator
- Period Calculator
- Permutations Calculator
- Photo Overlap Calculator
- Photogrammetry Accuracy Estimate Calculator
- Plasterboard Sheets Calculator
- Pool Lap Calculator
- Pool Volume Calculator
- Powder Factor Calculator (kg per BCM)
- Power Converter
- Power-to-Weight Calculator
- Pregnancy Due Date Calculator
- Present Value Calculator
- Pressure Converter
- Prime Number Checker
- Prism Constant Check Calculator
- Profit Margin Calculator
- Proportion Calculator
- Protein Intake Calculator
- Pyramid Volume Calculator
- Pythagorean Theorem Calculator
- QR Code Generator
- Quadratic Equation Calculator
- Race Finish Time Calculator
- Race Time Predictor
- Random Number Generator
- Ratio Calculator
- Recipe Scaler Calculator
- Rectangle Area Calculator
- Rectangle Perimeter Calculator
- Rectangular Prism Volume Calculator
- Reduced Latitude Calculator
- Regex Tester
- Regular Hexagon Area Calculator
- Regular Pentagon Area Calculator
- Regular Polygon Area Calculator
- Required Bike Speed Calculator
- Retaining Wall Blocks Calculator
- Reverse Percentage Calculator
- RGF93 / Lambert-93 Converter (France)
- Rhombus Area Calculator
- RL Difference Calculator
- Road Base Calculator
- ROI Calculator
- Roof Pitch Calculator
- Rowing 500m Split Calculator
- Rowing Watts Calculator
- Rule of 72 Calculator
- Running Pace Calculator
- Salary to Hourly Calculator
- Sales Tax Calculator
- Sand Calculator
- Savings Goal Calculator
- Sector Area Calculator
- Series Resistance Calculator
- Shirt Size Calculator
- Shoe Size Calculator
- Signed vs Cardinal Coordinate Notation Converter
- Simple Interest Calculator
- Sleep Calculator
- Slope Calculator
- Solar Output Calculator
- Solar Panel Count Calculator
- Specific Charge Calculator
- Speed Converter
- Speed, Distance & Time Calculator
- Speedometer Error Calculator
- Sphere Surface Area Calculator
- Sphere Volume Calculator
- Sprint Speed Calculator
- Square Area Calculator
- Square Root Calculator
- Stacked Discount Calculator
- Stair Calculator
- Standard Deviation Calculator
- Station Chainage & Offset Calculator
- Steps to Distance Calculator
- Straight-Line Depreciation Calculator
- Streaming Data Calculator
- Strip Ratio Calculator
- Subnet Hosts Calculator
- Subnet Mask Calculator
- Survey Area Coverage Calculator
- Survey Tolerance Checker
- Swell Factor Calculator
- Swim Time Predictor
- Swimming Pace Calculator
- Swimrun Calculator
- Swiss LV95 / LV03 Converter
- Target Pace Calculator
- Target Row Split Calculator
- TDEE Calculator
- Temperature Converter
- Test Grade Calculator
- Text Diff Checker
- Tile Calculator
- Time Converter
- Time Duration Calculator
- Tip Calculator
- Tire Size Calculator
- Toe Position Calculator
- Topsoil Calculator
- Track Lap Split Calculator
- Transformer Turns Calculator
- Trapezoid Area Calculator
- Trapezoid Perimeter Calculator
- Traverse Closure Ratio Calculator
- Traverse Misclose Calculator
- Triangle Area Calculator
- Triangle Perimeter Calculator
- Triathlon Finish Time Calculator
- Two-Peg Test Calculator
- Unit Price Calculator
- Unix Timestamp Converter
- Upload Time Calculator
- Uptime / SLA Calculator
- URL Encoder / Decoder
- UTM Scale Factor Calculator
- UTM to Lat/Long Converter
- UTM Zone Finder from Coordinates
- UUID Generator
- Vertical Difference Calculator
- Vincenty Ellipsoidal Distance Calculator
- VoIP Bandwidth Calculator
- Voltage Divider Calculator
- Volume Converter
- Waist-to-Height Ratio Calculator
- Waist-to-Hip Ratio Calculator
- Walking Pace Calculator
- Wallpaper Calculator
- Watts to Amps Calculator
- Watts to kWh Calculator
- Weight Converter
- Word & Character Counter
- Z-Score Calculator