Open Apple’s Measure app, scan the object slowly, then tap its detected rectangular outline or mark two points manually. The result is an estimate, not a precision measurement; check an important dimension with a physical tape measure.
Measure a rectangular object automatically
-
Open Measure, which is in the Utilities folder by default. Slowly move your iPhone so the camera can scan the object and its surroundings.
As an Amazon Associate I earn from qualifying purchases.
-
When a white outline appears around a rectangular object, tap the outline or the Add button to display its dimensions.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy. -
Take a photo of the reading if you want to keep a visual record.
#1 Best Overall
BOSCH GLM100-23 100 Ft Blaze Laser Distance Measure, With 2 AA Batteries- ACCURATE: This laser measuring tool features long range measuring with extreme accuracy. It measures distances up to 100 feet to within 1/16 inch, in meters, feet, inches, with fractions or decimals
- EASY-TO-USE: This laser measure features a simple, user-friendly layout with two-button operation: one for measuring, one for rounding
- CLASS II LASER: Specs for this laser distance measuring tool are 635 nm; <1 mW
- PORTABLE: This compact laser measurement tool is easy to carry and fits in your pocket
- DISPLAY: BOSCH Blaze laser measure features a backlit display with large icons that allows measurements to be easily read, even in dark areas. It is brighter than its predecessor, the GLM20
Apple recommends measuring well-defined objects about 0.5 to 3 meters (2 to 10 feet) from the iPhone for best results. Apple describes the readings as approximate.
Measure a length by setting two points
-
In Measure, point the center dot at the place where the measurement should start, then tap Add.
Rank #2
Laser Measuring Tool 165 Feet, RockSeed Portable Laser Measure, Digital Distance Measurement with 2 Bubble Levels, Laser Tape Measure with 5 Units Conversion (Blue)- ★ HIGH ACCURACY & UNIT SWITCHABLE ★ Features dual bubble levels for more precise leveling compared to single-level tools. Utilizes laser precision technology with an accuracy of ±1/16 inch (0.06 inch) and a measuring range of up to 165 feet. Freely switch between meters, inches, and feet for flexible adjustment.
- ★ 0.2-SECOND RAPID MEASUREMENT & HIGHER PRECISION ★ Equipped with the latest 2025 measurement chip, achieving a 0.2-second response time—2.5 times faster than conventional devices. Offers high precision of ±1/16 inch (0.06 inch), delivering both speed and accuracy.
- ★ WIDER OPERATING TEMPERATURE RANGE ★ Powered by an upgraded processor, operating reliably in temperatures from 14°F to 122°F (-10°C to 50°C). Maintains consistent accuracy and stability even in extreme conditions.
- ★ MULTIPLE MEASUREMENT FUNCTIONS ★ Measures area, distance, length, and volume; supports continuous measurement and Pythagorean (3-point) method; includes addition/subtraction functions, low battery indicator, 99-group memory, manual data deletion, and auto power-off after 150 seconds of inactivity to conserve energy.
- ★ WHAT YOU GET ★ Rockseed 165Ft Laser Measure; 1.5V AAA Batteries; User Manual; Wrist Strap; Packaging Box. (Makes an ideal Thanksgiving or Christmas gift for family and friends.) All ROCKSEED products are certified to international standards including CE, FCC and RoHS, and feature an IP54 rating for splash and dust resistance. We offer a 2-year warranty and dedicated technical support for laser measuring tools in the United States.
-
Pan the iPhone slowly until the center dot reaches the endpoint, then tap Add again. The app displays the distance between the two points.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy. -
Photograph the result if you need a record of the measurement.
Rank #3
Laser Measure 50M/165ft,RockSeed Digital Laser Distance Meter with 2 Bubble Levels,Portable M/in/Ft Unit Switching Backlit LCD and Measuring Distance/Area/Volume/Pythagorean- ★ HIGH ACCURACY & UNIT SWITCHABLE ★ With unique 2 Bubble Levels, providing more precise measurement compared to one bubble;With laser precision technology, accuracy ups to ±1/16inch, measuring distance extends to 165 feet; Switchable among M/In/Ft for free adjustment
- ★ LCD BACKLIGHT & MUTE SETTING ★ Large backlight screen provides you with a better visibility in dark areas; Mute setting allows you turn on or off the measure beep at your will, suitable for using in library, classroom and other quite places,the laser level is ideal for home, construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc
- ★ MULTIPLE MEASUREMENT FEATURES ★ Area, distance, length, volume, continuous measurement, Pythagorean method-three points; Addition and subtraction; Low battery indication; 20 groups data memory; Manually delete data; Auto shut down after 150s without any operation to save power
- ★ DURABLE AND HANDY DESIGN ★ IP54 waterproof level and dust-proof function protect the laser distance measure to the maximum extent; Portable size provides a good grip; Wrist strap lets you hold the meter steady and carry easily
- ★ WHAT YOU GET ★ Rockseed Laser Measuring Device 165Ft; 1.5V AAA Batteries; User Manual; Hand Strap; Package Box; (Ideal thanksgiving gifts and christmas gifts for family and friends)All ROCKSEED products are certified by international standards including CE, FCC and ROHS, with an IP54 rating (splash and dust resistant). We provide 2 years of technical support and after-sales service for laser measuring tools in the United States.
Use other Measure features when available
Edge guides and Ruler view
On supported iPhone models, automatic edge guides can help measure straight edges and the height of furniture, countertops, and other objects. Ruler view can show incremental units in more detail after you measure between two points. Availability depends on the model; Apple’s feature guidance does not establish a complete eligible-model list here.
Measure a person’s height
On supported models, frame the person from head to toe and wait for the measurement line. Measure can report height from the floor to the top of the head, hair, or hat; seated height is also possible. Save the result image to Photos or Files.
Rank #4
- ★ HIGH ACCURACY & UNIT SWITCHABLE ★ With unique 2 Bubble Levels, providing more precise measurement compared to one bubble;With laser precision technology, accuracy ups to ±1/16inch, measuring distance extends to 328 feet; Switchable among M/In/Ft for free adjustment
- ★ LCD BACKLIGHT & MUTE SETTING ★ Large backlight screen provides you with a better visibility in dark areas; Mute setting allows you turn on or off the measure beep at your will, suitable for using in library, classroom and other quite places,the laser level is ideal for home, construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc
- ★ MULTIPLE MEASUREMENT FEATURES ★ Area, distance, length, volume, continuous measurement, Pythagorean method-three points; Addition and subtraction; Low battery indication; 20 groups data memory; Manually delete data; Auto shut down after 150s without any operation to save power
- ★ DURABLE AND HANDY DESIGN ★ IP54 waterproof level and dust-proof function protect the laser distance measure to the maximum extent; Portable size provides a good grip; Wrist strap lets you hold the meter steady and carry easily
- ★ WHAT YOU GET ★ Rockseed Laser Measuring Device 328Ft; 1.5V AAA Batteries; User Manual; Hand Strap; Package Box; (Ideal thanksgiving gifts and christmas gifts for family and friends)All ROCKSEED products are certified by international standards including CE, FCC, and ROHS, with an IP54 rating (splash and dust resistant). We provide 2 years of technical support and after-sales service for laser measuring tools in the United States.
Save or reuse measurements
Measurements from a session can be reviewed and copied into another app on supported models. Person-height readings are not included in that session list, so save their image separately.
When to verify the result
Use Measure for a quick estimate or to record approximate dimensions. If a dimension affects a purchase, installation, or other consequential decision, check it with a physical tape measure rather than relying on the camera reading alone.
Quick Recap
Best Value
- [Reliable and Efficient] Upgraded electronic level with accuracy up to +/-0.3°and laser tape measure with accuracy up to +/-2mm, MILESEEY D5 delivers more accurate and faster measurements of angle and distance than bubble level meters. And with real-time display of electronic angle, it is much easier for users to find the horizontal direction, which guarantees high-accuracy measure results
- [UNIQUE FUNCTIONS] The high precision laser head component can be measured quickly and accurately in 0.5s, Auto-Level: Only measure the hypotenuse, the horizontal distance and vertical height will be calculated automatically; Auto-height: Only measure 2 hypotenuses, the vertical height will be calculated automatically; Fast measurement: automatic calculation of area and volume with one button operation
- [PRACTICAL MULTIPLE Measurements] 70M laser distance measure accuracy +/-1/16 inch (+/-2mm), and it offers automatic calculation of area, volume and distance, continuous measurement, pythagorean method-3points to meet your different measuring needs.; good laser measuring device for covering large area:home decoration, especially in large areas such as apartments, buildings, real estates, factories, warehouses, construction and industries
- [UNITS SWITCH & 30 DATA RECORDS & Energy-saving Design] freely switch the units in M/ FT/IN/ft+in; 30 data records and recall function which are useful for reviewing and calculating; portable Pocket-sized, non-slip design; 180s of automatic shutdown to save the power, can work up to 5000 times
- [24 MONTHS+ INTERNATIONAL CERTIFICATE] 1 x digital measure laser, 2 x 1.5 V AAA, 1 x user manual, 1 x portable bag, 1 x portable bracelet; CE / FDA / ROHS/ WEEE certification, IP54(splash-proof and dust-proof), We always provide 2-year assurance and technical support for laser measurement tool
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
