Mini Tools Collection
Useful one-page tools for real work
ToolPatch is a growing collection of focused utilities. Each page handles one task with clear inputs, fast results, and practical outputs.
Browse by Use Case
Quick filters
Recent Tools
Favorite Tools
Angle Converter
Convert angles between deg, rad, and grad.
Convert angular units for math, engineering, and graphics workflows.
Case Converter
Convert text between different cases.
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case with individual copy buttons.
Cooking Measurements Converter
Convert kitchen volume units like tsp, tbsp, cups, ounces, pints, and liters.
Convert common cooking measurement units with quick equivalents for recipe scaling and prep.
Data Size Converter
Convert data sizes across bytes, KB, MB, GB, and TB.
Useful for storage estimates, file size planning, and cloud budgeting.
EBCDIC Converter
Convert text to EBCDIC hex and vice-versa.
Translate strings between UTF-8 and EBCDIC (IBM037) encoding. Useful for mainframe data analysis and legacy system integration.
Energy Converter
Convert energy units: J, kJ, cal, kcal, Wh, kWh, and BTU.
Convert thermal and electrical energy units for engineering, nutrition, and utility contexts.
Frequency Period Converter
Convert between frequency and period.
Bidirectional converter between frequency (Hz) and period (seconds) using f = 1/T. Useful for electronics, signal processing, and wave analysis.
Fuel Economy Converter
Convert fuel economy across mpg US, mpg UK, L/100km, and km/L.
Convert fuel efficiency units used across automotive regions with full equivalents output.
HEIC to JPG Converter
Convert HEIC images to JPG where browser support is available.
Upload HEIC files and export JPG output using local browser decoding when supported by platform capabilities.
JPG to PNG Converter
Convert JPG images to PNG format in-browser.
Upload a JPG image and convert it to PNG for lossless workflows and transparent-ready editing.
Length/Distance Converter
Convert between metric and imperial length units.
Convert lengths and distances between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles.
PNG to JPG Converter
Convert PNG images to JPG format in-browser.
Upload a PNG file and export JPG output with adjustable quality settings.
Power Density Converter
Convert power density between hp/L and kW/L.
Convert engine and motor specific output metrics across horsepower per liter and kilowatt per liter.
Power Unit Converter
Convert between PS, HP, BHP, and kW power units.
Convert engine and motor power ratings across PS, HP, BHP, and kW with quick all-unit output.
Pressure Altitude Converter
Calculate pressure altitude from altimeter settings or station pressure.
Convert aviation/weather pressure inputs to pressure altitude in feet and meters.
Shoe Size Converter
Convert shoe sizes across US men's, US women's, UK, EU, and JP(cm).
Approximate shoe size conversion across major regional sizing systems.
SVG to PNG Converter
Rasterize SVG files to PNG at configurable scale.
Upload an SVG and export PNG output with selectable scaling for web assets and previews.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin values instantly.
One-page converter for common scientific and everyday temperature units.
Throughput Unit Converter
Convert bps/Kbps/Mbps/Gbps and estimate transfer time.
Translate bandwidth units and estimate file transfer durations for operations and capacity planning.
Timezone Converter
Convert date and time across common time zones.
Translate timestamps between selected time zones for scheduling and distributed team coordination.
Torque Converter
Convert torque between Nm, lb-ft, and kgf-m.
Convert mechanical torque units for automotive, motorsport, and engineering workflows.
Unix Timestamp Converter
Convert unix timestamps to UTC datetime and back.
Translate epoch seconds and parseable datetime strings for logs, APIs, and debugging workflows.
Weight/Mass Converter
Convert between metric and imperial weight units.
Convert weights and masses between milligrams, grams, kilograms, tonnes, ounces, pounds, and tons.
IPv4 to Integer Converter
Convert IPv4 addresses to 32-bit integers and back.
Useful for database indexing, scripting, firewall rule systems, and low-level networking work.
Pressure Converter
Convert pressure units: Pa, kPa, bar, psi, and atm.
Ideal for engineering checks, tire pressure, and process control tasks.
Speed Converter
Convert speed across m/s, km/h, mph, and knots.
Useful for transport planning, sports metrics, and navigation.
Unit Converter
Convert length values across metric and imperial units.
Convert between meters, kilometers, centimeters, millimeters, miles, feet, and inches. Useful for engineering specs, logistics, and daily conversion tasks.
Volume Converter
Convert liters, milliliters, gallons, quarts, and cups.
Helps with recipes, lab prep, and fluid volume planning.
Weight Converter
Convert kg, g, lb, oz, and tonnes accurately.
Useful for shipping, nutrition, fitness, and engineering workflows.