Arctan Calculator
To use the arctan calculator, enter a number where it says Number, and press Calculate. The answer will be returned in radians, and degrees.
. Number:
Radians:
Degrees:
The table of arctangents(arctg)
| arctg(0) = 0° | arctg(-1.732050808) = 120° | arctg(1.732050808) = 240° |
| arctg(0.01745506493) = 1° | arctg(-1.664279482) = 121° | arctg(1.804047755) = 241° |
| arctg(0.03492076949) = 2° | arctg(-1.600334529) = 122° | arctg(1.880726465) = 242° |
| arctg(0.05240777928) = 3° | arctg(-1.539864964) = 123° | arctg(1.962610506) = 243° |
| arctg(0.06992681194) = 4° | arctg(-1.482560969) = 124° | arctg(2.050303842) = 244° |
| arctg(0.08748866353) = 5° | arctg(-1.428148007) = 125° | arctg(2.144506921) = 245° |
| arctg(0.1051042353) = 6° | arctg(-1.37638192) = 126° | arctg(2.246036774) = 246° |
| arctg(0.1227845609) = 7° | arctg(-1.327044822) = 127° | arctg(2.355852366) = 247° |
| arctg(0.1405408347) = 8° | arctg(-1.279941632) = 128° | arctg(2.475086853) = 248° |
| arctg(0.1583844403) = 9° | arctg(-1.234897157) = 129° | arctg(2.605089065) = 249° |
| arctg(0.1763269807) = 10° | arctg(-1.191753593) = 130° | arctg(2.747477419) = 250° |
| arctg(0.1943803091) = 11° | arctg(-1.150368407) = 131° | arctg(2.904210878) = 251° |
| arctg(0.2125565617) = 12° | arctg(-1.110612515) = 132° | arctg(3.077683537) = 252° |
| arctg(0.2308681911) = 13° | arctg(-1.07236871) = 133° | arctg(3.270852618) = 253° |
| arctg(0.2493280028) = 14° | arctg(-1.035530314) = 134° | arctg(3.487414444) = 254° |
| arctg(0.2679491924) = 15° | arctg(-1) = 135° | arctg(3.732050808) = 255° |
| arctg(0.2867453858) = 16° | arctg(-0.9656887748) = 136° | arctg(4.010780934) = 256° |
| arctg(0.3057306815) = 17° | arctg(-0.9325150861) = 137° | arctg(4.331475874) = 257° |
| arctg(0.3249196962) = 18° | arctg(-0.9004040443) = 138° | arctg(4.704630109) = 258° |
| arctg(0.3443276133) = 19° | arctg(-0.8692867378) = 139° | arctg(5.144554016) = 259° |
| arctg(0.3639702343) = 20° | arctg(-0.8390996312) = 140° | arctg(5.67128182) = 260° |
| arctg(0.383864035) = 21° | arctg(-0.8097840332) = 141° | arctg(6.313751515) = 261° |
| arctg(0.4040262258) = 22° | arctg(-0.7812856265) = 142° | arctg(7.115369722) = 262° |
| arctg(0.4244748162) = 23° | arctg(-0.7535540501) = 143° | arctg(8.144346428) = 263° |
| arctg(0.4452286853) = 24° | arctg(-0.726542528) = 144° | arctg(9.514364454) = 264° |
| arctg(0.4663076582) = 25° | arctg(-0.7002075382) = 145° | arctg(11.4300523) = 265° |
| arctg(0.4877325886) = 26° | arctg(-0.6745085168) = 146° | arctg(14.30066626) = 266° |
| arctg(0.5095254495) = 27° | arctg(-0.6494075932) = 147° | arctg(19.08113669) = 267° |
| arctg(0.5317094317) = 28° | arctg(-0.6248693519) = 148° | arctg(28.63625328) = 268° |
| arctg(0.5543090515) = 29° | arctg(-0.600860619) = 149° | arctg(57.28996163) = 269° |
| arctg(0.5773502692) = 30° | arctg(-0.5773502692) = 150° | arctg(∞) = 270° |
| arctg(0.600860619) = 31° | arctg(-0.5543090515) = 151° | arctg(-57.28996163) = 271° |
| arctg(0.6248693519) = 32° | arctg(-0.5317094317) = 152° | arctg(-28.63625328) = 272° |
| arctg(0.6494075932) = 33° | arctg(-0.5095254495) = 153° | arctg(-19.08113669) = 273° |
| arctg(0.6745085168) = 34° | arctg(-0.4877325886) = 154° | arctg(-14.30066626) = 274° |
| arctg(0.7002075382) = 35° | arctg(-0.4663076582) = 155° | arctg(-11.4300523) = 275° |
| arctg(0.726542528) = 36° | arctg(-0.4452286853) = 156° | arctg(-9.514364454) = 276° |
| arctg(0.7535540501) = 37° | arctg(-0.4244748162) = 157° | arctg(-8.144346428) = 277° |
| arctg(0.7812856265) = 38° | arctg(-0.4040262258) = 158° | arctg(-7.115369722) = 278° |
| arctg(0.8097840332) = 39° | arctg(-0.383864035) = 159° | arctg(-6.313751515) = 279° |
| arctg(0.8390996312) = 40° | arctg(-0.3639702343) = 160° | arctg(-5.67128182) = 280° |
| arctg(0.8692867378) = 41° | arctg(-0.3443276133) = 161° | arctg(-5.144554016) = 281° |
| arctg(0.9004040443) = 42° | arctg(-0.3249196962) = 162° | arctg(-4.704630109) = 282° |
| arctg(0.9325150861) = 43° | arctg(-0.3057306815) = 163° | arctg(-4.331475874) = 283° |
| arctg(0.9656887748) = 44° | arctg(-0.2867453858) = 164° | arctg(-4.010780934) = 284° |
| arctg(1) = 45° | arctg(-0.2679491924) = 165° | arctg(-3.732050808) = 285° |
| arctg(1.035530314) = 46° | arctg(-0.2493280028) = 166° | arctg(-3.487414444) = 286° |
| arctg(1.07236871) = 47° | arctg(-0.2308681911) = 167° | arctg(-3.270852618) = 287° |
| arctg(1.110612515) = 48° | arctg(-0.2125565617) = 168° | arctg(-3.077683537) = 288° |
| arctg(1.150368407) = 49° | arctg(-0.1943803091) = 169° | arctg(-2.904210878) = 289° |
| arctg(1.191753593) = 50° | arctg(-0.1763269807) = 170° | arctg(-2.747477419) = 290° |
| arctg(1.234897157) = 51° | arctg(-0.1583844403) = 171° | arctg(-2.605089065) = 291° |
| arctg(1.279941632) = 52° | arctg(-0.1405408347) = 172° | arctg(-2.475086853) = 292° |
| arctg(1.327044822) = 53° | arctg(-0.1227845609) = 173° | arctg(-2.355852366) = 293° |
| arctg(1.37638192) = 54° | arctg(-0.1051042353) = 174° | arctg(-2.246036774) = 294° |
| arctg(1.428148007) = 55° | arctg(-0.08748866353) = 175° | arctg(-2.144506921) = 295° |
| arctg(1.482560969) = 56° | arctg(-0.06992681194) = 176° | arctg(-2.050303842) = 296° |
| arctg(1.539864964) = 57° | arctg(-0.05240777928) = 177° | arctg(-1.962610506) = 297° |
| arctg(1.600334529) = 58° | arctg(-0.03492076949) = 178° | arctg(-1.880726465) = 298° |
| arctg(1.664279482) = 59° | arctg(-0.01745506493) = 179° | arctg(-1.804047755) = 299° |
| arctg(1.732050808) = 60° | arctg(0) = 180° | arctg(-1.732050808) = 300° |
| arctg(1.804047755) = 61° | arctg(0.01745506493) = 181° | arctg(-1.664279482) = 301° |
| arctg(1.880726465) = 62° | arctg(0.03492076949) = 182° | arctg(-1.600334529) = 302° |
| arctg(1.962610506) = 63° | arctg(0.05240777928) = 183° | arctg(-1.539864964) = 303° |
| arctg(2.050303842) = 64° | arctg(0.06992681194) = 184° | arctg(-1.482560969) = 304° |
| arctg(2.144506921) = 65° | arctg(0.08748866353) = 185° | arctg(-1.428148007) = 305° |
| arctg(2.246036774) = 66° | arctg(0.1051042353) = 186° | arctg(-1.37638192) = 306° |
| arctg(2.355852366) = 67° | arctg(0.1227845609) = 187° | arctg(-1.327044822) = 307° |
| arctg(2.475086853) = 68° | arctg(0.1405408347) = 188° | arctg(-1.279941632) = 308° |
| arctg(2.605089065) = 69° | arctg(0.1583844403) = 189° | arctg(-1.234897157) = 309° |
| arctg(2.747477419) = 70° | arctg(0.1763269807) = 190° | arctg(-1.191753593) = 310° |
| arctg(2.904210878) = 71° | arctg(0.1943803091) = 191° | arctg(-1.150368407) = 311° |
| arctg(3.077683537) = 72° | arctg(0.2125565617) = 192° | arctg(-1.110612515) = 312° |
| arctg(3.270852618) = 73° | arctg(0.2308681911) = 193° | arctg(-1.07236871) = 313° |
| arctg(3.487414444) = 74° | arctg(0.2493280028) = 194° | arctg(-1.035530314) = 314° |
| arctg(3.732050808) = 75° | arctg(0.2679491924) = 195° | arctg(-1) = 315° |
| arctg(4.010780934) = 76° | arctg(0.2867453858) = 196° | arctg(-0.9656887748) = 316° |
| arctg(4.331475874) = 77° | arctg(0.3057306815) = 197° | arctg(-0.9325150861) = 317° |
| arctg(4.704630109) = 78° | arctg(0.3249196962) = 198° | arctg(-0.9004040443) = 318° |
| arctg(5.144554016) = 79° | arctg(0.3443276133) = 199° | arctg(-0.8692867378) = 319° |
| arctg(5.67128182) = 80° | arctg(0.3639702343) = 200° | arctg(-0.8390996312) = 320° |
| arctg(6.313751515) = 81° | arctg(0.383864035) = 201° | arctg(-0.8097840332) = 321° |
| arctg(7.115369722) = 82° | arctg(0.4040262258) = 202° | arctg(-0.7812856265) = 322° |
| arctg(8.144346428) = 83° | arctg(0.4244748162) = 203° | arctg(-0.7535540501) = 323° |
| arctg(9.514364454) = 84° | arctg(0.4452286853) = 204° | arctg(-0.726542528) = 324° |
| arctg(11.4300523) = 85° | arctg(0.4663076582) = 205° | arctg(-0.7002075382) = 325° |
| arctg(14.30066626) = 86° | arctg(0.4877325886) = 206° | arctg(-0.6745085168) = 326° |
| arctg(19.08113669) = 87° | arctg(0.5095254495) = 207° | arctg(-0.6494075932) = 327° |
| arctg(28.63625328) = 88° | arctg(0.5317094317) = 208° | arctg(-0.6248693519) = 328° |
| arctg(57.28996163) = 89° | arctg(0.5543090515) = 209° | arctg(-0.600860619) = 329° |
| arctg(∞) = 90° | arctg(0.5773502692) = 210° | arctg(-0.5773502692) = 330° |
| arctg(-57.28996163) = 91° | arctg(0.600860619) = 211° | arctg(-0.5543090515) = 331° |
| arctg(-28.63625328) = 92° | arctg(0.6248693519) = 212° | arctg(-0.5317094317) = 332° |
| arctg(-19.08113669) = 93° | arctg(0.6494075932) = 213° | arctg(-0.5095254495) = 333° |
| arctg(-14.30066626) = 94° | arctg(0.6745085168) = 214° | arctg(-0.4877325886) = 334° |
| arctg(-11.4300523) = 95° | arctg(0.7002075382) = 215° | arctg(-0.4663076582) = 335° |
| arctg(-9.514364454) = 96° | arctg(0.726542528) = 216° | arctg(-0.4452286853) = 336° |
| arctg(-8.144346428) = 97° | arctg(0.7535540501) = 217° | arctg(-0.4244748162) = 337° |
| arctg(-7.115369722) = 98° | arctg(0.7812856265) = 218° | arctg(-0.4040262258) = 338° |
| arctg(-6.313751515) = 99° | arctg(0.8097840332) = 219° | arctg(-0.383864035) = 339° |
| arctg(-5.67128182) = 100° | arctg(0.8390996312) = 220° | arctg(-0.3639702343) = 340° |
| arctg(-5.144554016) = 101° | arctg(0.8692867378) = 221° | arctg(-0.3443276133) = 341° |
| arctg(-4.704630109) = 102° | arctg(0.9004040443) = 222° | arctg(-0.3249196962) = 342° |
| arctg(-4.331475874) = 103° | arctg(0.9325150861) = 223° | arctg(-0.3057306815) = 343° |
| arctg(-4.010780934) = 104° | arctg(0.9656887748) = 224° | arctg(-0.2867453858) = 344° |
| arctg(-3.732050808) = 105° | arctg(1) = 225° | arctg(-0.2679491924) = 345° |
| arctg(-3.487414444) = 106° | arctg(1.035530314) = 226° | arctg(-0.2493280028) = 346° |
| arctg(-3.270852618) = 107° | arctg(1.07236871) = 227° | arctg(-0.2308681911) = 347° |
| arctg(-3.077683537) = 108° | arctg(1.110612515) = 228° | arctg(-0.2125565617) = 348° |
| arctg(-2.904210878) = 109° | arctg(1.150368407) = 229° | arctg(-0.1943803091) = 349° |
| arctg(-2.747477419) = 110° | arctg(1.191753593) = 230° | arctg(-0.1763269807) = 350° |
| arctg(-2.605089065) = 111° | arctg(1.234897157) = 231° | arctg(-0.1583844403) = 351° |
| arctg(-2.475086853) = 112° | arctg(1.279941632) = 232° | arctg(-0.1405408347) = 352° |
| arctg(-2.355852366) = 113° | arctg(1.327044822) = 233° | arctg(-0.1227845609) = 353° |
| arctg(-2.246036774) = 114° | arctg(1.37638192) = 234° | arctg(-0.1051042353) = 354° |
| arctg(-2.144506921) = 115° | arctg(1.428148007) = 235° | arctg(-0.08748866353) = 355° |
| arctg(-2.050303842) = 116° | arctg(1.482560969) = 236° | arctg(-0.06992681194) = 356° |
| arctg(-1.962610506) = 117° | arctg(1.539864964) = 237° | arctg(-0.05240777928) = 357° |
| arctg(-1.880726465) = 118° | arctg(1.600334529) = 238° | arctg(-0.03492076949) = 358° |
| arctg(-1.804047755) = 119° | arctg(1.664279482) = 239° | arctg(-0.01745506493) = 359° |