Ultimate Calculator
AppDevGenie Education
Comprehensive collection of electronics calculators, tools and reference tables.
- Rating
- 4.5
- 42 ratings
- Downloads
- 500+
- on Google Play
- Price
- $0.99
- No in-app purchases
- Updated
- Dec 22
- 2025 · v1.6
Screenshots
About Ultimate Calculator
Only available in English.
Comprehensive collection of electronics calculators, tools and reference tables.
Ultimate Calculator Pro is a utility application consisting of 157 calculators, conversions, reference tables, pin outs; and a basic pocket calculator.
Calculators:
DC Circuits:
• Ohm`s Law
• Voltage divider - resistive
• LED resistor
• RL transient circuits
• RC transient circuits
• Wheatstone bridge
• Battery life
AC Circuits:
• Reactance
• Impedance
• Star Delta Transformation
• AC Power
• Voltage divider - capacitive
Power Supply:
• Transformer ratios
• Rectifiers
• Capacitor filter
• Transformer efficiency
• Voltage regulator - LM317
• Voltage regulator - Zener diode
Amplification:
• Slew Rate
• Gain | Ratio
• Non-Inverting Amplifier
• Inverting Amplifier
• Differential Amplifier
• Inverting Summing Amplifier
Filters:
• RC filter – passive
• LC filter – passive
• RL filter – passive
Semiconductors:
• Series Circuits
• Parallel Circuits
• Capacitors
• Inductors
• Diodes
• 555 Timer
• Air Core Inductors
• LM 3914 Display driver
• LM 3915/6 Display driver
Identification:
• Resistor – color codes
• Inductor – color codes
• Capacitor – printed
• Fuse, glass – color codes
• Diodes
• 7-Segment display
Physics:
• Coulomb`s Law
• Magnetism
• Joules Law – heating
• Electrical energy
Geometry:
• Area (rectangle, triangle, circle, trapezoid, ellipse, square, parallelogram, sector)
• Surface area (cylinder, sphere, cube, cone)
• Volume (rectangle, cylinder, sphere)
Radiation:
• Electromagnetic wave (wavelength, frequency, period)
• Propagation delay (distance vs. time)
• Resonance (frequency, inductance, capacitance)
• Radiated power (vs. VSWR)
• Air core inductors (inductance, turns)
RF Link:
• Free space path loss (loss, distance)
• Link budget (RSSI, fade margin)
• Fresnel zone (1st, max, 60%, Er)
RF Base Station:
• Transmission line (Tx, Att, Pout)
• EIRP ERP (effective radiated power)
• Antenna down-tilt – angle (angle, distance)
• Antenna down-tilt – coverage (inner & outer radius)
Radar:
• Power density (W/m²)
• Maximum range (distance)
Losses:
• Attenuators (Pi, Tee)
• VSWR (voltage standing wave ratio)
• Reflection coefficient (Rho)
• Return loss (dB)
• Mismatch loss (dB)
Converters:
• Angle
• Area
• Cooking
• Current (RF)
• Distance | Length
• Energy
• Field strength (RF)
• Fuel consumption
• Mass
• Number base
• Power
• Power (RF)
• Pressure
• Si units
• Sine wave
• Speed
• Storage
• Temperature
• Terminated (RF)
• Time
• Torque
• Voltage (RF)
• Volume
Reference:
• SI unit prefixes
• Logic gates
• 74xx ic
• ASCII
• Abbreviations
• Schematic symbols
• Ingress protection
• Decibel suffixes
• RF Spectrum
• Amateur band plan – IARU region 1
• Amateur Q codes
• Phonetic alphabet (NATO)
• IT Acronyms
• Units of measure
Pin out:
• Audio/video
RCA connector
Jack - TS
Jack - TRS
Jack – TRRS
Jack – TRS color codes
SCART
VGA
DIN
DVI
DVI mini
DVI types
HDMI type A
• Computer
USB - type A and B
USB - mini and micro
Serial - DE9
Serial - DB25
PS2
AT keyboard
SATA – data
SATA – power
Molex – atx power
Molex – power
USB-C
• Gaming
Game/MIDI port
• Boards
• Raspberry Pi – GPIO
• Arduino UNO
• Components
• Led – 2 pin
• Led – RGB
• Regulator – 78xx/79xx
• Regulator – LM317
Display – LED 7 segment
Display - LCD 16 x 2 (1602)
Display - LCD 16 x 4 (1604)
Display driver – LM391x
Transistor – TO-92
• Microcontroller
Atmega 8 - DIP
Atmega 8 - MLF
Atmega 8 - TQFP
Atmega 328 - DIP
Atmega 328 - TQFP
Atmega 328 - MLF
Atmega 2560
Atmega 8u2 - QFN
Atmega 8u2 - TQFP
Atmega 16u2 - QFN
Atmega 16u2 - TQFP
Atmega 32u2 - QFN
Atmega 32u2 - TQFP
• Miscellaneous
OBD II
Memory card – SD
Memory card – mini SD
Memory card – micro SD
Comprehensive collection of electronics calculators, tools and reference tables.
Ultimate Calculator Pro is a utility application consisting of 157 calculators, conversions, reference tables, pin outs; and a basic pocket calculator.
Calculators:
DC Circuits:
• Ohm`s Law
• Voltage divider - resistive
• LED resistor
• RL transient circuits
• RC transient circuits
• Wheatstone bridge
• Battery life
AC Circuits:
• Reactance
• Impedance
• Star Delta Transformation
• AC Power
• Voltage divider - capacitive
Power Supply:
• Transformer ratios
• Rectifiers
• Capacitor filter
• Transformer efficiency
• Voltage regulator - LM317
• Voltage regulator - Zener diode
Amplification:
• Slew Rate
• Gain | Ratio
• Non-Inverting Amplifier
• Inverting Amplifier
• Differential Amplifier
• Inverting Summing Amplifier
Filters:
• RC filter – passive
• LC filter – passive
• RL filter – passive
Semiconductors:
• Series Circuits
• Parallel Circuits
• Capacitors
• Inductors
• Diodes
• 555 Timer
• Air Core Inductors
• LM 3914 Display driver
• LM 3915/6 Display driver
Identification:
• Resistor – color codes
• Inductor – color codes
• Capacitor – printed
• Fuse, glass – color codes
• Diodes
• 7-Segment display
Physics:
• Coulomb`s Law
• Magnetism
• Joules Law – heating
• Electrical energy
Geometry:
• Area (rectangle, triangle, circle, trapezoid, ellipse, square, parallelogram, sector)
• Surface area (cylinder, sphere, cube, cone)
• Volume (rectangle, cylinder, sphere)
Radiation:
• Electromagnetic wave (wavelength, frequency, period)
• Propagation delay (distance vs. time)
• Resonance (frequency, inductance, capacitance)
• Radiated power (vs. VSWR)
• Air core inductors (inductance, turns)
RF Link:
• Free space path loss (loss, distance)
• Link budget (RSSI, fade margin)
• Fresnel zone (1st, max, 60%, Er)
RF Base Station:
• Transmission line (Tx, Att, Pout)
• EIRP ERP (effective radiated power)
• Antenna down-tilt – angle (angle, distance)
• Antenna down-tilt – coverage (inner & outer radius)
Radar:
• Power density (W/m²)
• Maximum range (distance)
Losses:
• Attenuators (Pi, Tee)
• VSWR (voltage standing wave ratio)
• Reflection coefficient (Rho)
• Return loss (dB)
• Mismatch loss (dB)
Converters:
• Angle
• Area
• Cooking
• Current (RF)
• Distance | Length
• Energy
• Field strength (RF)
• Fuel consumption
• Mass
• Number base
• Power
• Power (RF)
• Pressure
• Si units
• Sine wave
• Speed
• Storage
• Temperature
• Terminated (RF)
• Time
• Torque
• Voltage (RF)
• Volume
Reference:
• SI unit prefixes
• Logic gates
• 74xx ic
• ASCII
• Abbreviations
• Schematic symbols
• Ingress protection
• Decibel suffixes
• RF Spectrum
• Amateur band plan – IARU region 1
• Amateur Q codes
• Phonetic alphabet (NATO)
• IT Acronyms
• Units of measure
Pin out:
• Audio/video
RCA connector
Jack - TS
Jack - TRS
Jack – TRRS
Jack – TRS color codes
SCART
VGA
DIN
DVI
DVI mini
DVI types
HDMI type A
• Computer
USB - type A and B
USB - mini and micro
Serial - DE9
Serial - DB25
PS2
AT keyboard
SATA – data
SATA – power
Molex – atx power
Molex – power
USB-C
• Gaming
Game/MIDI port
• Boards
• Raspberry Pi – GPIO
• Arduino UNO
• Components
• Led – 2 pin
• Led – RGB
• Regulator – 78xx/79xx
• Regulator – LM317
Display – LED 7 segment
Display - LCD 16 x 2 (1602)
Display - LCD 16 x 4 (1604)
Display driver – LM391x
Transistor – TO-92
• Microcontroller
Atmega 8 - DIP
Atmega 8 - MLF
Atmega 8 - TQFP
Atmega 328 - DIP
Atmega 328 - TQFP
Atmega 328 - MLF
Atmega 2560
Atmega 8u2 - QFN
Atmega 8u2 - TQFP
Atmega 16u2 - QFN
Atmega 16u2 - TQFP
Atmega 32u2 - QFN
Atmega 32u2 - TQFP
• Miscellaneous
OBD II
Memory card – SD
Memory card – mini SD
Memory card – micro SD
User reviews
Love the App nice to see more conversion's added keep them c🤓ming.
Highly Recommended.
Thanks, for the update....issue resolved after update.... excellent App
Very usefull
This is the coolest calculator I've ever used. I only wish this technology and this calculator was available when I was taking Electronics and Engineering. The only thing I would like see added is the Darlington Pair.
Great tool for the serious hamradio operator or rf/electronics engineer. Would like to see a light theme though because environment light.
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