All Tools
Browse the complete collection of free online tools.
PDF Tools
page management
editing & annotation
optimization
security & metadata
Image Tools
edit & optimize
batch processing
metadata & privacy
overlays & templates
Video & Audio
audio editing
conversion & export
Files & Archives
archives & compression
file inspection & integrity
File Hash Calculator
Calculate SHA-256, SHA-512 hash of files
File Type Detector
Detect the real file type by inspecting magic bytes
File Size Info
View detailed file size information
Checksum Manifest Verifier
Verify selected files against a SHA-256 or SHA-512 checksum manifest
File Duplicate Finder
Find exact duplicate files locally by comparing size and SHA-256 hashes
Calculators
math & statistics
date & time
health & fitness
physics & engineering
Area Calculator
Calculate the area of rectangles, circles, triangles, and more
Volume Calculator
Calculate the volume of boxes, cylinders, spheres, and cones
Force Calculator
Solve force, mass, or acceleration with Newton's second law
Power Calculator
Solve power, energy, or time with P = E ÷ t
Pressure Calculator
Solve pressure, force, or area with P = F ÷ A
Finance
housing & vehicles
borrowing & debt
spending & pricing
Unit Converters
common units
Length Converter
Convert between length units
Weight Converter
Convert between weight units
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin
Area Converter
Convert between area units
Volume Converter
Convert between volume units
Speed Converter
Convert between speed units
Time Converter
Convert between time units
technical units
cooking & household
Text Tools
text transforms
text cleanup
Developer Tools
encoding & data formats
identifiers & security
patterns & scheduling
color & number bases
QR & Barcodes
Web & Network
device tests
network & web diagnostics
AI & LLM Utilities
Productivity
timers & focus
date & time
Documents & Office
Data & Spreadsheets
Professional & Business
business documents
accounting & CFO
Profit-to-cash autopsy
Bridge reported profit to operating and free cash flow.
True available cash
Separate usable cash from restrictions, commitments, and operating reserves.
Cash release simulator
Model cash released by changing receivable, inventory, and payable days.
13-week cash planner
Project weekly cash, minimum balances, and peak funding need.
Straight-line depreciation
Calculate periodic depreciation, accumulated depreciation, and book value.
VAT and tax reserve
Estimate VAT payable, credits, income tax, and total tax reserves.
AR/AP priority
Prioritize receivables collection and urgent payable coverage.
Reconciliation checker
Compare expected and reported balances against a chosen tolerance.
Accounting health dashboard
Review liquidity, overdue balances, runway, and operating margin.
Break-even sensitivity
Stress-test break-even volume against price and variable-cost changes.
Profit leak estimate
Measure gross-margin leakage, recoverable value, and annualized impact.
procurement & logistics
Supplier negotiation value
Compare landed cost, minimum order, defects, terms, and deposit cash.
Import cash-lock
Estimate the total cash committed to an import order.
Shipment volume and chargeable weight
Calculate CBM, dimensional weight, and shipment capacity.
Container utilization
Estimate carton fit, volume use, and weight use for a container.
Demurrage estimator
Estimate progressive demurrage charges beyond free days.
Landed unit cost
Allocate product, freight, duty, handling, and yield costs per usable unit.
construction
manufacturing & warehouse
hospitality & retail
HR, education & healthcare operations
Staffing coverage
Compare required hours with scheduled, absent, overtime, and agency hours.
Attendance and turnover
Review headcount movement, turnover, retention, absence, and payroll cost per employee.
Classroom workload
Estimate teaching, preparation, grading, and administrative workload.
Clinic capacity planner
Plan operational appointment capacity, no-shows, unmet demand, and period contribution.
sales, agency & field service
Sales deal profit
Review discount, fees, returns, contribution margin, and target margin.
Agency project profit
Compare fixed-fee project revenue with hours, delivery costs, utilization, and target margin.
Field service job profit
Measure billed labor, paid time, parts, callbacks, job margin, and break-even labor rate.