Free web apps, Android tools, calculators, converters โ all in one place. No login. No subscription. Just tools that work.
TaskJunction is a free platform with no login, no subscription, no hidden permissions. We offer web apps, Android tools, calculators, converters โ all in one place. Every tool is crafted with care and runs locally on your device so your data stays yours. Our mission: make everyday digital tasks easier for everyone.
Hi! I'm Vaibhav โ an indie developer passionate about building free, useful tools for everyone. TaskJunction started as a simple idea: make everyday tasks easier. Every app here is crafted with care, zero cost, and no hidden permissions.
Professional-grade mechanical engineering calculators โ pneumatics, gear systems, drive selection, metal weight & pricing, conveyor design and more. All tools run in your browser. No install, no account required.
Calculate extend & retract forces for pneumatic cylinders. Bore, rod diameter, supply & back pressure. Live cross-section diagram. SI / Imperial toggle.
Open CalculatorCompute gear ratios, output speed and torque for spur, helical & planetary gear systems. Multi-stage support with live animated visualization.
Open CalculatorSimply supported, cantilever & fixed beam analysis. Bending stress, shear force diagrams and max deflection.
Open CalculatorTightening torque for bolted joints. Metric & UNC/UNF fasteners, friction coefficients and clamp force.
Open CalculatorCalculate cylinder extend & retract forces for hydraulic systems. Bore, rod diameter, pressure inputs with SI / Imperial unit toggle.
Open CalculatorCalculate spring constant, deflection, stress and natural frequency for compression, extension & torsion springs. Material library included.
Open CalculatorSelect the right motor and gearbox by entering linear velocity, RPM, load torque, duty cycle and ambient temperature.
Open CalculatorDesign roller chain drives โ chain pitch, sprocket teeth, centre distance, chain length, speed ratio and power transmitted.
Open CalculatorCalculate V-belt and flat belt drives โ belt length, speed ratio, tension, power capacity and centre distance.
Open CalculatorFull conveyor system design โ belt speed, capacity, motor power, tension and drive requirements.
Open CalculatorGeometric Dimensioning & Tolerancing calculator โ compute true position, flatness, circularity, concentricity and bonus tolerance.
Open CalculatorSelect the right hydraulic system components โ pump type, valve configuration, actuator sizing and fluid lines.
Open CalculatorCalculate tangential cutting force, torque, power and feed force for circular saw operations. Supports wood, metal and composite materials.
Open CalculatorCalculate punch & die clearance, blank size, cutting force, stripper force and tonnage for sheet metal operations.
Open CalculatorProfessional-grade civil engineering calculators โ structural analysis, RCC design, soil mechanics, surveying and more. All tools run in your browser. No install, no account required.
Design reinforced concrete beams per IS 456. Calculate moment of resistance, steel area, shear reinforcement and deflection checks.
Open CalculatorDesign RCC columns under axial load and biaxial bending. Supports short and slender columns with IS 456 compliance checks.
Open CalculatorCalculate safe bearing capacity of soil using Terzaghi's and Meyerhof's equations. Supports strip, square and circular footings.
Open CalculatorCompute flow velocity, discharge and Manning's n for trapezoidal, rectangular and circular channels. Includes critical and normal depth.
Open CalculatorCalculate reduced levels, height of instrument, contour intervals and area from field survey data. Supports HI and rise-fall methods.
Open CalculatorDesign flexible and rigid pavements using IRC methods. Calculate CBR-based thickness, traffic loading and structural layer design.
Open CalculatorAnalyse cantilever and gravity retaining walls โ overturning, sliding, bearing pressure and stability checks with IS 456 code compliance.
Open CalculatorDesign water supply networks โ pipe sizing, pressure loss (Hazen-Williams), reservoir capacity and daily demand estimation.
Open CalculatorProfessional-grade electrical engineering calculators โ circuit analysis, power systems, motor design, cable sizing and more. All tools run in your browser. No install, no account required.
Instantly compute voltage, current, resistance and power. Supports series and parallel circuit configurations with live formula display.
Open CalculatorSelect the correct cable cross-section for AC/DC loads. Accounts for current capacity, voltage drop, temperature derating and IS 3961 standards.
Open CalculatorCalculate active, reactive and apparent power for balanced and unbalanced three-phase systems. Includes power factor correction guidance.
Open CalculatorCompute slip, rotor speed, torque, efficiency and starting current for 3-phase induction motors. Full-load and no-load analysis included.
Open CalculatorDesign single and three-phase transformers โ turns ratio, core dimensions, copper loss, iron loss and regulation at full load.
Open CalculatorCalculate symmetrical fault currents, impedance and short-circuit MVA for radial and ring distribution systems per IEC 60909.
Open CalculatorCalculate lux levels, number of luminaires, spacing and uniformity for indoor and outdoor lighting layouts per IS 3646 standards.
Open CalculatorSize battery banks and UPS systems for given load, backup duration and discharge rate. Supports lead-acid and lithium-ion battery types.
Open CalculatorProfessional-grade electronics engineering calculators โ analog circuits, digital logic, PCB design, signal processing and microcontroller interfacing. All tools run in your browser. No install required.
Calculate current-limiting resistor values for LEDs, resistor colour code decoder and E-series preferred value finder. Supports single and multi-LED strings.
Open CalculatorDesign inverting, non-inverting, summing and difference amplifiers. Computes gain, bandwidth and output swing for standard op-amp configurations.
Open CalculatorCalculate cutoff frequency, impedance and phase response for RC low-pass, high-pass and LC bandpass filters. Bode plot preview included.
Open CalculatorConvert between binary, octal, decimal and hexadecimal instantly. Includes 1's complement, 2's complement and BCD encoding for digital design.
Open CalculatorDesign astable and monostable 555 timer circuits. Compute frequency, duty cycle, pulse width and component values (R1, R2, C) instantly.
Open CalculatorCalculate minimum PCB trace width for internal and external copper layers based on current, temperature rise and IPC-2221 standard requirements.
Open CalculatorDesign voltage divider networks and select LM78xx/LM317 regulator output voltages. Computes resistor values, power dissipation and efficiency.
Open CalculatorCalculate ADC resolution, LSB step size, SNR and dynamic range for 8 to 24-bit converters. Supports unipolar and bipolar reference configurations.
Open CalculatorHandpicked engineering eBooks across every discipline โ from mechanical design to software engineering. Free to explore, no login required.
TaskJunction does not collect any personal information. We do not require you to create an account or log in.
All tools run locally on your device. We do not store, transmit, or share any user data on our servers.
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We may update this policy occasionally. Continued use of the app after changes implies acceptance.
For any privacy questions, email us at: vaibhavdhokpande@gmail.com